Question

我一直在寻找一种方法来在C＃（3.5）中创建一个类似于表的东西，但仍然是空的。基本上我想这样做

    var myClassVar = new myClass();
    myClassVar["hello"]["world"] = "hello world";
    myClassVar["hello"][0] = "swapped";
    myClassVar[0][0] = "test";
    myClassVar["hello"]["to"]["the"]["world"] = "again";
    myClassVar[0][1][0][0] = "same as above sorta";

我正在尝试创建这种类来解析我为存储数据而创建的文件格式。有谁知道这样的事情？

Answer 1

public class LuaTable
{
    private Dictionary<object, dynamic> properties = new Dictionary<object, dynamic>();
    public dynamic this[object property]
    {
        get
        {
            if (properties.ContainsKey(property))
                return properties[property];
            LuaTable table = new LuaTable();
            properties.Add(property, table);
            return table;
        }
        set
        {
            if (!properties.ContainsKey(property))
                properties.Add(property, value);
            else
                properties[property] = value;
        }
    }
}

您可以完全按照自己的意愿使用它：

var myClassVar = new LuaTable();
myClassVar["hello"]["world"] = "hello world";
myClassVar["hello"][0] = "swapped";
myClassVar[0][0] = "test";
myClassVar["hello"]["to"]["the"]["world"] = "again";
myClassVar[0][1][0][0] = "same as above sorta";

string s1 = myClassVar["hello"]["world"]; // = "hello world"
string s2 = myClassVar["hello"][0]; // = "swapped"
string s3 = myClassVar[0][0]; // = "test"
string s4 = myClassVar["hello"]["to"]["the"]["world"]; // = "again"
string s5 = myClassVar[0][1][0][0]; // = "same as above sorta"

编辑：我刚刚意识到C＃3.5没有dynamic，所以这里只是一个使用泛型的版本。我希望这很好（因为你必须让你的表的所有子属性属于同一类型（在这种情况下，string）：

public class LuaTable<T> where T : class
{
    private bool isValue;
    private T value = null;
    private Dictionary<object, LuaTable<T>> properties = new Dictionary<object, LuaTable<T>>();

    public static implicit operator LuaTable<T>(T val)
    {
        if (val is LuaTable<T>)
            return (LuaTable<T>)val;
        return new LuaTable<T>() { isValue = true, value = val };
    }
    public static implicit operator T(LuaTable<T> table)
    {
        if (table.isValue)
            return table.value;
        return table;
    }

    public LuaTable<T> this[object property]
    {
        get
        {
            if (isValue)
                return null;

            if (properties.ContainsKey(property))
                return properties[property];
            LuaTable<T> table = new LuaTable<T>();
            properties.Add(property, table);
            return table;
        }
        set
        {
            if (!properties.ContainsKey(property))
                properties.Add(property, value);
            else
                properties[property] = value;
        }
    }
}

要使用它，它几乎与上面完全相同。只需更改第一行：

var myClassVar = new LuaTable<string>();

在C＃中的Luatable相当于？

1 个答案: